Li, TianyiCui, YiFan, LonglongZhou, XinweiRen, YangDe Andrade, VincentDe Carlo, FrancescoZhu, Likun2022-01-202022-01-202020-12Li, T., Cui, Y., Fan, L., Zhou, X., Ren, Y., De Andrade, V., De Carlo, F., & Zhu, L. (2020). A self-healing liquid metal anode with PEO-Based polymer electrolytes for rechargeable lithium batteries. Applied Materials Today, 21, 100802. https://doi.org/10.1016/j.apmt.2020.100802https://hdl.handle.net/1805/27488Ga-Sn liquid metal material is demonstrated as a self-healing anode system due to its fluidity via operando synchrotron-based transmission X-ray microscopy and X-ray diffraction experiments. Cracks formed due to volume expansions can be recovered by the fluidity of the liquid metals. By incorporating with a poly(ethylene oxide) (PEO)-based electrolyte at 60 °C, the Ga-Sn anode shows a reversible lithium insertion and extraction process with a high initial discharge specific capacity of 682 mAh g − 1, followed by delivering a capacity of 462 mAh g − 1 in the second cycle at C/20 rate. Compared with its solid counterparts, the Ga-Sn liquid metal anode demonstrates a better capability to maintain its mechanical integrity and better contact with PEO solid electrolytes due to its advantageous features of the liquid. This study suggests a potential strategy to use liquid metal alloys with polymer solid electrolyte to solve the challenges in rechargeable lithium batteries.enPublisher Policylithium ion batterygallium tin alloyliquid metalArticle